Telescopic clamping pressurizing mixed flow handheld fan

Abstract

The utility model relates to the technical field of fans, and discloses a telescopic clamping pressurizing mixed flow handheld fan which comprises a fan head used for driving to generate airflow and a handle connected with the fan head. The fan head comprises an air duct assembly and a fan assembly; the air duct assembly is provided with an air inlet and an air outlet; the fan assembly is arranged in the air duct assembly, and the fan assembly is driven to generate airflow; the handle comprises a telescopic clamping assembly, and the telescopic clamping assembly can move in a telescopic mode relative to the handle and is clamped on an external object to be fixed. The clamp has a small clamping structure, can be suitable for a narrow clamping space, and is more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, especially in a kind of telescopic clamping pressurization mixed flow handheld fan. BACKGROUND

[0002] Fan is a kind of household appliance using motor-driven fan blade rotation to achieve air acceleration flow, it is mainly used for blowing cooling and air circulation.

[0003] The handheld fan on the market, mainly for handheld use, need to hold by hand, or through the way of base is placed on desktop, there is not stable, easy to touch and fall down etc.

[0004] Therefore, it needs to be improved. INVENTION CONTENTS

[0005] The utility model solves the technical problem in the prior art, provide a kind of telescopic clamping pressurization mixed flow handheld fan, to solve the problem raised in the above background art.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a kind of telescopic clamping pressurization mixed flow handheld fan, comprising: for driving generation airflow fan head and handle connected with the fan head;The fan head includes air duct assembly and fan assembly;The air duct assembly has air inlet and air outlet;The fan assembly is arranged in the air duct assembly, and the fan assembly drives generation airflow;The handle includes telescopic clamping assembly, and the telescopic clamping assembly can be relative to the handle telescopic movement and clamps on the external object and is fixed.

[0007] Further, the telescopic clamping assembly includes telescopic housing, telescopic rod, elastic member and base;The telescopic housing is provided with more than one telescopic channel, the telescopic rod is arranged in the telescopic channel, one end of the telescopic rod extends to the outside of the telescopic channel and is connected with the base, and the elastic member is sleeved on the telescopic rod and is arranged in the telescopic channel;When the base is stretched by external force, the telescopic rod compresses the elastic member along the telescopic channel to move, so that the base and the bottom of the handle are clamped on the external object.

[0008] Further, the lower part of the telescopic channel is provided with the first step, and the upper part of the telescopic rod is provided with the second step, and the elastic member is arranged between the first step and the second step.

[0009] Further, the fan head is hinged to the handle, one side of the upper part of the handle is provided with a recessed accommodating groove, and both sides of the accommodating groove are provided with rotating holes;The outer portion of the fan head is provided with a rotating shaft, the rotating shaft is arranged in the accommodating groove, and the rotating shaft is connected with the rotating hole.

[0010] Further, the air duct assembly comprises a first shell, a second shell and a third shell; the fan assembly comprises a first motor and a fan blade; the first shell is located at an air inlet end; the first shell comprises a first outer ring, a motor mounting seat and one or more first pressurizing pieces; the first motor is arranged on the motor mounting seat; the fan blade is arranged on the output end of the first motor; the first pressurizing pieces are distributed on the inner wall of the first outer ring and extend to connect the outer peripheral edge of the motor mounting seat; the inner wall of the first outer ring, the first pressurizing pieces and the motor mounting seat form a first speed-increasing air duct, which increases the radial air passage area to form air flow pressure increasing speed through the first pressurizing pieces; the second shell is arranged at the air outlet end of the first shell; the second shell comprises a second outer ring, a pressurizing seat and one or more second pressurizing pieces; the second pressurizing pieces are distributed on the inner wall of the second outer ring and extend to connect the outer peripheral edge of the pressurizing seat; the inner wall of the second outer ring, the second pressurizing pieces and the pressurizing seat form a second speed-increasing air duct, which increases the radial air passage area to form air flow pressure increasing speed through the second pressurizing pieces; the third shell is arranged at the air outlet end of the second shell; the third shell comprises a third outer ring, a guide seat and one or more third pressurizing pieces; the third pressurizing pieces are distributed on the inner wall of the third outer ring and extend to connect the outer peripheral edge of the guide seat; the third outer ring, the third pressurizing pieces and the guide seat form a third speed-increasing air duct, which increases the radial air passage area to form air flow pressure increasing speed through the third pressurizing pieces to guide the air flow to blow out.

[0011] Further, the first pressurizing pieces are distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressurizing pieces of the first speed-increasing air duct guide the air flow in the same direction or gather the air flow in the opposite direction to the second speed-increasing air duct; the second pressurizing pieces are distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressurizing pieces blow out the air flow in the opposite direction or in the same direction, achieving the effect of air flow pressure increasing and gathering.

[0012] Further, the first motor comprises a stator and a rotor, the stator is fixed on the motor mounting seat, and the rotor is arranged on the fan blade, and the rotor is sleeved on the stator.

[0013] Further, the motor mounting seat is provided with a convex column extending along the axial direction and internally hollow; the fan blade comprises a hub part and blades uniformly arranged on the outer circumferential surface of the hub part, the hub part is provided with a receiving part recessed inwardly; the stator comprises an iron core inserted on the convex column and a coil wound on the iron core; the rotor comprises a rotating shaft axially arranged in the receiving part and a magnetic ring attached to the radial inner wall of the receiving part, and the rotating shaft is inserted in the convex column.

[0014] Further, a driving circuit board is arranged in the handle.

[0015] Further, a digital display panel is arranged on the air outlet end of the fan head; a power supply interface is arranged on the handle; and a battery is arranged in the handle.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. A telescopic clamping assembly is arranged on the handle, which clamps and fixes the fan body when in use, has a small structure and low production cost, and can be applied to various use scenarios, such as the edge of a table top, a hole position and the like, and has a wider use range.

[0018] 2. The fan head and the handle are connected by hinging, which can adjust the air outlet direction of the fan head, and the air outlet direction can be adjusted in a rotating manner according to the use requirement of a user, and the operation is convenient.

[0019] 3. A three-step speed air duct is arranged on the air duct structure, which gradually pressurizes the airflow passing through, increases the airflow speed, and increases the air supply range.

[0020] 4. The combination of clockwise and counterclockwise distribution modes is adopted in the design of the pressurizing sheet, which realizes the adjustment mode of first gathering air and then guiding air or first guiding air and then gathering air. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the utility model.

[0022] Figure 2 is Figure 1 another angle structural schematic diagram of the utility model.

[0023] Figure 3 is a stretched structure schematic diagram of the utility model.

[0024] Figure 4 is a structural schematic diagram of the fan head and the handle.

[0025] Figure 5 is a structural schematic diagram of the fan head.

[0026] Figure 6 is an exploded structural schematic view of the fan head.

[0027] Figure 7 is an exploded structural schematic view of the telescopic clamping assembly.

[0028] Figure 8 is a sectional view of the telescopic clamping assembly.

[0029] Figure 9 is a partial enlarged structural schematic view of Figure 8

[0030] Figure 10 is a partial enlarged structural schematic view of Figure 8

[0031] Figure 11 is an exploded structural schematic view of the fan head.

[0032] Figure 12 is a structural schematic view of the first shell.

[0033] Figure 13 is a structural schematic view of the second shell.

[0034] Figure 14 is a structural schematic view of the third shell.

[0035] Figure 15 is a sectional view of the fan head.

[0036] Fig. 1 is a fan head; Fig. 2 is a handle; Fig. 3 is a wind channel assembly; Fig. 4 is a fan assembly; Fig. 5 is a telescopic clamping assembly; Fig. 6 is a telescopic shell; Fig. 7 is a telescopic rod; Fig. 8 is an elastic member; Fig. 9 is a base; Fig. 10 is a telescopic channel; Fig. 11 is a first step; Fig. 12 is a second step; Fig. 13 is a containing groove; Fig. 14 is a rotating hole; Fig. 15 is a rotating shaft; Fig. 16 is a first shell; Fig. 17 is a second shell; Fig. 18 is a third shell; Fig. 19 is a first motor; Fig. 20 is a fan blade; Fig. 21 is a first outer ring; Fig. 22 is a motor mounting base; Fig. 23 is a first pressurizing sheet; Fig. 24 is a first speed-increasing wind channel; Fig. 25 is a second outer ring; Fig. 26 is a pressurizing base; Fig. 27 is a second pressurizing sheet; Fig. 28 is a second speed-increasing wind channel; Fig. 29 is a third outer ring; Fig. 30 is a wind guiding base; Fig. 31 is a third pressurizing sheet; Fig. 32 is a third speed-increasing wind channel; Fig. 33 is a stator; Fig. 34 is a rotor; Fig. 35 is a driving circuit board; Fig. 36 is a digital display panel; Fig. 37 is a power supply interface; and Fig. 38 is a battery. DETAILED DESCRIPTION

[0037] The utility model will be explained in further detail below in connection with the drawings.

[0038] ​​The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings and are used only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be construed as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are used only for the purpose of description and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be interpreted broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected internally between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature with respect to the second feature can include the first and second features directly contacting, or the first and second features not directly contacting but contacting through another feature between them. Moreover, the "upper", "above" and "on" of the first feature with respect to the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature with respect to the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In view of the technical problems described in the background art, as shown in Figures 1-5 A telescopic clamping and pressurized mixed-flow handheld fan is provided, comprising: a fan head 1 for driving air flow and a handle 2 connected with the fan head 1; the fan head 1 comprises a wind channel assembly 3 and a fan assembly 4; the wind channel assembly 3 has an air inlet and an air outlet; the fan assembly 4 is arranged in the wind channel assembly 3, and the fan assembly 4 drives air flow; the handle 2 comprises a telescopic clamping assembly 5, which can be telescopically moved relative to the handle 2 and clamped on an external object to be fixed.

[0040] In the above technical solution, the air duct assembly 3 is used for forming and circulating the air flow; the fan assembly 4 is used for driving the air flow. The telescopic clamping assembly 5 is arranged at the position of the handle 2, and the telescopic clamping assembly 5 is fixed by stretching, and under the action of the elasticity, the handle 2 can be fixed on an external object, such as the edge of a table top or a hole position. Due to the small size of the structure, the cost can be reduced; at the same time, it can be applied to different use scenarios and has a wide range of use.

[0041] As shown in Figures 7-10 , the telescopic clamping assembly 5 includes a telescopic shell 6, a telescopic rod 7, an elastic member 8, and a base 9. The telescopic shell 6 is provided with one or more telescopic channels 10, the telescopic rod 7 is arranged in the telescopic channel 10, one end of the telescopic rod 7 extends out of the telescopic channel 10 and is connected with the base 9, the elastic member 8 is sleeved on the telescopic rod 7 and is arranged in the telescopic channel 10. When the base 9 is stretched by an external force, the telescopic rod 7 compresses the elastic member 8 to move along the telescopic channel 10, so that the base 9 and the bottom of the handle 2 are clamped on an external object.

[0042] In the above, a specific telescopic clamping assembly 5 structure is provided. The telescopic shell 6 can be arranged outside or inside the handle 2, and the telescopic shell 6 can be assembled with the handle 2 as an independent component or integrally formed with the handle 2. Preferably, the telescopic shell 6 is prepared separately and then assembled on the handle 2 by screws. The telescopic shell 6 is provided with a telescopic channel 10, and the number of telescopic channels 10 is determined according to the number of telescopic rods 7. For example, when one telescopic rod 7 is used, one telescopic channel 10 is used; when two telescopic rods 7 are used, two telescopic channels 10 are used; and so on. The elastic member 8 is installed in the telescopic channel 10, and the elastic member 8 is preferably a spring or other component with the same properties as the spring.

[0043] In specific use, one end of the telescopic rod 7 is arranged in the telescopic channel 10, the other end of the telescopic rod 7 is connected with the base 9, under the action of an external force, the telescopic rod 7 compresses the elastic member 8 in the telescopic channel 10, the base 9 is manually aligned with the bottom of the handle 2 at the position to be clamped, and after being released, the clamping is fixed under the action of the elastic member 8. The structure is simple and has few components; it is small in structure and does not occupy space; and it can adapt to various use scenarios.

[0044] Specifically, the lower part of the telescopic channel 10 is provided with a protruding first step 11, the upper part of the telescopic rod 7 is provided with a protruding second step 12, and the elastic member 8 is arranged between the first step 11 and the second step 12.

[0045] To limit the position and compression of the spring, a first step 11 is arranged in the telescopic channel 10 and a second step 12 is arranged in the upper part of the telescopic rod 7, the outer diameter of the second step 12 matches the inner diameter of the telescopic channel 10, so that when the telescopic rod 7 is telescoped in the telescopic channel 10, the spring is limited to move between the first step 11 and the second step 12.

[0046] With reference to Figure 4 As shown, the fan head 1 is hinged to the handle 2, the upper side of the handle 2 is provided with a recessed accommodating groove 13, both sides of the accommodating groove 13 are provided with rotating holes 14; the outer part of the fan head 1 is provided with a rotating shaft 15, the rotating shaft 15 is placed in the accommodating groove 13, and the rotating shaft 15 is connected with the rotating holes 14.

[0047] In the implementation, the fan head 1 and the handle 2 are designed in the form of hinge, the user can rotate the fan head 1 to adjust the air outlet direction of the fan head 1. The specific structure is that the lower part of the fan head 1 is provided with the rotating shaft 15, the handle 2 is provided with the accommodating groove 13, the accommodating groove 13 is used to limit the rotating angle of the fan head 1, the accommodating groove 13 is provided with the rotating hole 14, and the rotating shaft 15 and the rotating hole 14 can be installed with a damping pad to rotate. The fan head 1 is rotated in the position of the accommodating groove 13, and the air outlet direction of the fan head 1 is adjusted.

[0048] With reference to Figures 11-15As shown, the air duct assembly 3 comprises a first housing 16, a second housing 17 and a third housing 18; the fan assembly 4 comprises a first motor 19 and a fan blade 20; the first housing 16 is located at the air inlet end; the first housing 16 comprises a first outer ring 21, a motor mounting seat 22 and one or more first pressurizing pieces 23; the first motor 19 is arranged on the motor mounting seat 22; the fan blade 20 is arranged on the output end of the first motor 19; the first pressurizing pieces 23 are distributed on the inner wall of the first outer ring 21 and extend to connect the outer peripheral edge of the motor mounting seat 22; the inner wall of the first outer ring 21, the first pressurizing pieces 23 and the motor mounting seat 22 form a first speed-increasing air duct 24, which increases the radial air passage area to cause the airflow to be pressurized and speeded up via the first pressurizing pieces 23; the second housing 17 is arranged at the air outlet end of the first housing 16; the second housing 17 comprises a second outer ring 25, a pressurizing seat 26 and one or more second pressurizing pieces 27; the second pressurizing pieces 27 are distributed on the inner wall of the second outer ring 25 and extend to connect the outer peripheral edge of the pressurizing seat 26; the inner wall of the second outer ring 25, the second pressurizing pieces 27 and the pressurizing seat 26 form a second speed-increasing air duct 28, which increases the radial air passage area to cause the airflow to be pressurized and speeded up via the second pressurizing pieces 27; the third housing 18 is arranged at the air outlet end of the second housing 17; the third housing 18 comprises a third outer ring 29, a wind guide seat 30 and one or more third pressurizing pieces 31; the third pressurizing pieces 31 are distributed on the inner wall of the third outer ring 29 and extend to connect the outer peripheral edge of the wind guide seat 30; the third outer ring 29, the third pressurizing pieces 31 and the wind guide seat 30 form a third speed-increasing air duct 32, which increases the radial air passage area to cause the airflow to be pressurized and speeded up via the third pressurizing pieces 31 to guide the airflow to blow out.

[0049] As Figure 12 and Figure 15For the first shell 16 including the first outer ring 21, the motor mounting seat 22 and the first pressurizing piece 23, the motor mounting seat 22 can be integrally formed with the first outer ring 21 or be an independent component, and the motor mounting seat 22 can be arranged at the air inlet end position or the air outlet end position of the first outer ring 21. As an implementable technical manner, the motor mounting seat 22 is integrally formed with the first outer ring 21, and the motor mounting seat 22 is arranged at the air outlet end of the first outer ring 21. The first pressurizing piece 23 can be uniformly distributed or unevenly distributed between the first outer ring 21 and the motor mounting seat 22. Preferably, the first pressurizing piece 23 is in the form of circumferential uniform distribution. Due to the existence of the first pressurizing piece 23, the radial air passage area of the first outer ring 21 through which the airflow passes is reduced, and the first shell 16 is located at the air inlet end, so that the airflow can converge the airflow around, increase the air volume, and at the same time, the airflow is pressurized to increase the airflow speed.

[0050] As Figure 13 and Figure 15 , the second shell 17 includes the second outer ring 25, the pressurizing seat 26 and the second pressurizing piece 27, wherein the second outer ring 25, the pressurizing seat 26 and the second pressurizing piece 27 can be integrally formed or in the form of independent components, preferably, the second outer ring 25, the pressurizing seat 26 and the second pressurizing piece 27 are integrally formed, and the second shell 17 can be in the form of an integral or independent component with the first shell 16. The second pressurizing piece 27 can be uniformly distributed or unevenly distributed between the second outer ring 25 and the pressurizing seat 26. Preferably, the second pressurizing piece 27 is in the form of circumferential uniform distribution. Due to the existence of the second pressurizing piece 27 in the second speed-increasing air duct 28, the radial air passage area of the second outer ring 25 through which the airflow passes is reduced, further pressurizing the airflow to increase the airflow speed.

[0051] As Figure 14 and Figure 15 , the third shell 18 includes the third outer ring 29, the air guide seat 30 and the third pressurizing piece 31, wherein the third outer ring 29, the air guide seat 30 and the third pressurizing piece 31 can be integrally formed or in the form of independent components, preferably, the third outer ring 29, the air guide seat 30 and the third pressurizing piece 31 are integrally formed, and the third shell 18 can be integrated with the second shell 17 or the third shell 18 can be integrated with the second shell 17 and the first shell 16 or the third shell 18, the second shell 17 and the first shell 16 are in the form of independent components. The third pressurizing piece 31 can be uniformly distributed or unevenly distributed between the third outer ring 29 and the air guide seat 30. Preferably, the third pressurizing piece 31 is in the form of circumferential uniform distribution. Due to the existence of the third pressurizing piece 31 in the third speed-increasing air duct 32, the radial air passage area of the third outer ring 29 through which the airflow passes is reduced, further pressurizing the airflow to increase the airflow speed.

[0052] The three speed-increasing air ducts are adopted, when the airflow passes through the first speed-increasing air duct 24, the first pressure-increasing piece 23 arranged in the first speed-increasing air duct 24 causes the radial ventilation area to become smaller to realize the pressurization of the airflow, at the same time, the first speed-increasing air duct 24 is located at the air inlet end, thereby being able to absorb the surrounding air to increase the air volume; when the airflow passes through the second speed-increasing air duct 28, the second pressure-increasing piece 27 arranged in the second speed-increasing air duct 28 causes the radial ventilation area to become smaller to further pressurize the airflow in the second section; when the airflow passes through the third speed-increasing air duct 32, the third pressure-increasing piece 31 arranged in the third speed-increasing air duct 32 causes the radial ventilation area to become smaller to further pressurize the airflow in the third section, thereby realizing the increase of the air volume and the air supply distance of the airflow.

[0053] Referring to Figure 12 and Figure 13 As shown in the figures, the first pressure-increasing piece 23 is distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressure-increasing piece 23 of the first speed-increasing air duct 24 guides the airflow in the forward direction or gathers the airflow in the reverse direction to the second speed-increasing air duct 28, the second pressure-increasing piece 27 is distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressure-increasing piece 27 blows out the airflow in the reverse direction or in the forward direction, achieving the effect of pressurizing and gathering the airflow.

[0054] As a preferred technical solution, in an implementable manner, the first pressure-increasing piece 23 is arranged clockwise and the second pressure-increasing piece 27 is arranged counterclockwise, because the airflow is centrifugally moved along the periphery of the fan blade 20 under the driving of the fan blade 20, the first pressure-increasing piece 23 of the first speed-increasing air duct 24 is arranged in the opposite direction of the airflow movement, the first pressure-increasing piece 23 gathers the airflow moving in the periphery to change the flow direction of the airflow; the airflow passing through the first speed-increasing air duct 24 is guided to the second speed-increasing air duct 28, the second pressure-increasing piece 27 of the second speed-increasing air duct 28 is arranged counterclockwise, because the counterclockwise arrangement of the second pressure-increasing piece 27 is the same as the movement direction of the airflow, thereby the second pressure-increasing piece 27 guides the gathered airflow out, and the airflow passing through the second speed-increasing air duct 28 blows out in the front direction. Avoiding the dispersion of the airflow, causing the loss of air volume, achieving the effect of gathering and pressurizing the airflow.

[0055] In another implementable mode, the first pressurizing sheet 23 is arranged counterclockwise and the second pressurizing sheet 27 is arranged clockwise, and due to the airflow being driven by the fan blade 20, the airflow moves centrifugally along the periphery of the fan blade 20, the first pressurizing sheet 23 of the first speed-increasing air duct 24 is arranged in the same direction as the airflow, the first pressurizing sheet 23 guides and pressurizes the airflow moving peripherally, and due to the clockwise arrangement of the second pressurizing sheet 27 being opposite to the moving direction of the airflow, the second pressurizing sheet 27 can gather the airflow and change the flow direction of the airflow, so that the airflow can be blown out in a front blowing mode when blown out, avoiding the airflow being blown out dispersedly and causing the loss of air volume.

[0056] As shown in Figure 11 The first motor 19 comprises a stator 33 and a rotor 34, the stator 33 is fixed on the motor mounting seat 22, the rotor 34 is arranged on the fan blade 20, and the rotor 34 is sleeved on the stator 33.

[0057] Specifically, the motor mounting seat 22 is provided with a convex column extending in the axial direction and being hollow inside; the fan blade 20 comprises a hub portion and blades uniformly arranged on the outer peripheral surface of the hub portion, the hub portion is provided with a receiving portion recessed inwardly; the stator 33 comprises an iron core inserted into the convex column and a coil wound on the iron core; the rotor 34 comprises a rotating shaft arranged in the receiving portion in the axial direction and a magnetic ring attached to the radial inner wall of the receiving portion, and the rotating shaft is inserted into the convex column.

[0058] Preferably, as an implementable technical solution, the first motor 19 adopts an outer rotor brushless motor, in structure, the hub portion of the fan blade 20 is provided with a receiving portion, the fan blade 20 is used as the mounting position of the rotor 34, the magnetic ring and the rotating shaft of the rotor 34 are arranged at the receiving portion position, thereby optimizing the structure and saving the number of components, at the same time, the hollow convex column is arranged on the motor mounting seat 22, the rotating shaft is inserted into the convex column for positioning, at the same time, the iron core and the coil of the stator 33 can be sleeved on the convex column for positioning, the designed outer rotor brushless motor structure realizes the driving of the fan blade 20, the structure can be more compact, the number of components is saved, and the cost is reduced.

[0059] Further, the utility model discloses a driving circuit board 35, the driving circuit board 35 sets up in the handle 2.

[0060] Reference Figure 6As shown, the utility model of fan head 1 including digital display panel 36, digital display panel 36 set on the air outlet end of fan head 1, including power supply interface 37, power supply interface 37 set on handle 2, including battery 38, battery 38 set in handle 2. Digital display panel 36 can be used to show wind speed gear, battery 38 electric quantity and so on. Power supply interface 37 can be used to charge battery 38, or through connecting charging line power supply use. Battery 38 is rechargeable battery 38 or disposable battery 38, preferably adopts rechargeable battery 38.

[0061] The above is not any limit to the technical range of the utility model, any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.

Claims

1. A telescoping, clamping, pressurized, mixed-flow, hand-held fan, characterized by, It comprises: a fan head for driving air flow and a handle connected with the fan head; the fan head comprises an air duct assembly and a fan assembly; the air duct assembly has an air inlet and an air outlet; the fan assembly is arranged in the air duct assembly, and the fan assembly drives air flow; the handle comprises a telescopic clamping assembly which can be telescopically moved relative to the handle and clamped on an external object to be fixed.

2. The telescopic clamping and pressurized mixed flow handheld fan according to claim 1, wherein: the telescopic clamping assembly comprises a telescopic shell, a telescopic rod, an elastic member and a base; the telescopic shell is provided with one or more telescopic channels; the telescopic rod is arranged in the telescopic channel; one end of the telescopic rod extends out of the telescopic channel and is connected with the base; and the elastic member is sleeved on the telescopic rod and arranged in the telescopic channel; when the base is stretched by external force, the telescopic rod compresses the elastic member to move along the telescopic channel, so that the base and the bottom of the handle are clamped on an external object.

3. The telescopic clamping and pressurized mixed flow handheld fan according to claim 2, wherein: the lower part of the telescopic channel is provided with a protruding first step, the upper part of the telescopic rod is provided with a protruding second step, and the elastic member is arranged between the first step and the second step.

4. The telescopic clamping and pressurized mixed flow handheld fan according to claim 1, wherein: the fan head is hinged to the handle; one side of the upper part of the handle is provided with a recessed accommodating groove; both sides of the accommodating groove are provided with rotating holes; the outer part of the fan head is provided with a rotating shaft; the rotating shaft is arranged in the accommodating groove; and the rotating shaft is connected with the rotating holes.

5. The telescopic clamping and pressurized mixed flow handheld fan according to claim 1, wherein: the air duct assembly comprises a first shell, a second shell and a third shell; and the fan assembly comprises a first motor and a fan blade; the first shell is located at an air inlet end; the first shell comprises a first outer ring, a motor mounting seat and one or more first pressurizing pieces; the first motor is arranged on the motor mounting seat; the fan blade is arranged on the output end of the first motor; the first pressurizing pieces are distributed on the inner wall of the first outer ring and extend to connect the outer peripheral edge of the motor mounting seat; the inner wall of the first outer ring, the first pressurizing pieces and the motor mounting seat form a first speed-increasing air duct, and the first speed-increasing air duct increases the radial air passage area to be small through the first pressurizing pieces to form air flow pressurization and speed increase; the second shell is arranged at an air outlet end of the first shell; the second shell comprises a second outer ring, a pressurizing seat and one or more second pressurizing pieces; the second pressurizing pieces are distributed on the inner wall of the second outer ring and extend to connect the outer peripheral edge of the pressurizing seat; the inner wall of the second outer ring, the second pressurizing pieces and the pressurizing seat form a second speed-increasing air duct, and the second speed-increasing air duct increases the radial air passage area to be small through the second pressurizing pieces to form air flow pressurization and speed increase. A third shell is arranged at the air outlet end of the second shell; the third shell comprises a third outer ring, an air guide seat and one or more third pressurizing pieces; the third pressurizing pieces are distributed on the inner wall of the third outer ring and extend to the outer peripheral edge of the air guide seat; the third outer ring, the third pressurizing pieces and the air guide seat form a third speed-increasing air duct, the third speed-increasing air duct increases the radial air passage area to pressurize and speed up the airflow so as to guide the airflow to blow out.

6. The telescopic clamping pressurized mixed-flow handheld fan according to claim 5, characterized in that: the first pressurizing pieces are distributed clockwise or counterclockwise from the air inlet end to the air outlet end, so that the first pressurizing pieces of the first speed-increasing air duct guide the airflow in the same direction or gather the airflow in the opposite direction to the second speed-increasing air duct; the second pressurizing pieces are distributed counterclockwise or clockwise from the air inlet end to the air outlet end, so that the second pressurizing pieces blow out the airflow in the opposite direction or in the same direction, achieving the effect of pressurizing and gathering the airflow.

7. The telescopic clamping pressurized mixed-flow handheld fan according to claim 5, characterized in that: the first motor comprises a stator and a rotor; the stator is fixed on the motor mounting seat; the rotor is arranged on the fan blade; and the rotor is sleeved on the stator.

8. The telescopic clamping pressurized mixed-flow handheld fan according to claim 7, characterized in that: the motor mounting seat is provided with a convex column extending in the axial direction and hollow inside; the fan blade comprises a hub portion and blades uniformly arranged on the outer peripheral surface of the hub portion; the hub portion has a receiving portion arranged inwardly concave; the stator comprises an iron core inserted into the convex column and a coil wound on the iron core; the rotor comprises a rotating shaft arranged in the axial direction of the receiving portion and a magnetic ring attached to the radial inner wall of the receiving portion; and the rotating shaft is inserted into the convex column.

9. The telescopic clamping pressurized mixed-flow handheld fan according to any one of claims 1-7, characterized in that: a driving circuit board is arranged in the handle.

10. The telescoping clamp pressurized mixed flow hand fan of claim 9, wherein: a digital display panel is arranged on the air outlet end of the fan head; a power supply interface is arranged on the handle; a battery is arranged in the handle.

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